LUSER_RELAY mc Macro
A local user is one who evaluates to delivery on the local machine, even after aliasing. By defining LUSER_RELAY:
define(`LUSER_RELAY', `relay_host')dnlany username that is not found in the
passwd(5) file will be
forwarded to relay_host.
This check is made after aliasing but before
processing of the ~/.forward
file.
The mc method adds rules to the
localaddr rule
set 5 that cause the user to be looked up with the
user database
type (see the name field lookup for that type in
user on page 945). If the user’s
name is not found, the message is forwarded to
relay_host.
See Relays on page 602 for a
description of how to include a delivery agent
specification with
relay_host. Also see
the V8.12 FEATURE(preserve_luser_host) (FEATURE(preserve_luser_host) on page 638) for a way to preserve the
recipient’s hostname when using this LUSER_RELAY
m4 configuration
macro.
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